223432140 has 24 divisors (see below), whose sum is σ = 625610160. Its totient is φ = 59581888.

The previous prime is 223432129. The next prime is 223432141. The reversal of 223432140 is 41234322.

223432140 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (223432141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1861875 + ... + 1861994.

It is an arithmetic number, because the mean of its divisors is an integer number (26067090).

Almost surely, 2^223432140 is an apocalyptic number.

223432140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

223432140 is an abundant number, since it is smaller than the sum of its proper divisors (402178020).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

223432140 is a wasteful number, since it uses less digits than its factorization.

223432140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3723881 (or 3723879 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 223432140 is about 14947.6466375145. The cubic root of 223432140 is about 606.8041584815.

Adding to 223432140 its reverse (41234322), we get a palindrome (264666462).

The spelling of 223432140 in words is "two hundred twenty-three million, four hundred thirty-two thousand, one hundred forty".